Tutorials and Information for using Stones with Metal Clay

This page has links to useful resources about setting stones in metal clay. You’ll find information, tutorials and project guides about adding stones to PMC and Art Clay and stone setting in metal clay. Content checked June 2021.

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AGTA Guide to Gemstone Treatments

Rio Grande uses these symbols, set by the American Gem Trade Association (AGTA), to disclose any enhancements that may have been applied to their gemstones. For the benefit of your company and your customers, Rio Grande encourages you to use these symbols when you buy, display and sell stones and stone-set jewelry.

Art Jewelry Magazine – Opal Glossary

Find out all the terms used about Opals in this useful Opal glossary article.

Attaching and Setting Stones to Art Clay

Useful tutorial from Art Clay World

Chart showing gemstone characteristics

Includes information about how to fire them with Art Clay – from Art Clay World

Diamonds in Bronze Clay – Celie Fago

Celie Fago first fired diamonds in bronze clay in 2007/08 and wrote this blog post about it in 2010.

Diamonds in Sterling Metal Clay – Celie Fago

Celie Fago has added diamonds to Sterling metal clay and fired them in place. This blog post gives some information on this.

Fire Mountain Gems

US based supplier of Art Clay and stones. This is a short information page covering laboratory grown, synthetic and natural stones and also cubic zirconium (CZ).

Gemstones in Metal Clay 2021

Great handout by Mardel Rein for Cool Tools updated when new information becomes available. It includes information about firing gemstones in EZ960 open shelf and in carbon for silver, bronze and copper clay. Also includes firing instructions for Nano Gems. This link goes directly to the PDF handout on the Cool Tools website so you will always get the most up-to-date information.

Kiln tests of stones

List of the results from Kevin Whitmore’s experiments in firing gemstones. Useful resource for teachers.

Firing gemstones and natural stones

Good information from Art Clay World

Firing test information for gemstones used with Art Clay

Great resource from Art Clay World


Mohs Gemstone Hardness Scale

The Mohs scale of mineral hardness is a qualitative ordinal scale that characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science, some of which are more quantitative.

Natural Gemstone Firing Guide – Rio Grande

Over the years, Rio Grande has tested lots of natural gemstones for use in PMC®. The charts on this page can guide you toward stones to consider and stones to avoid when co-firing in PMC. 

Setting Gemstones in Metal Clay – Margaret Schindel

If you want to learn many different options for setting gemstones in metal clay both before and after firing, this article is for you. In addition to metal clay setting techniques and tips, you’ll also find recommended gemstone firing test charts and helpful tutorials, books, videos and tools. 

Teeda – Guide to Gemology

Great resource for information about gems. Includes cutting and polishing gems, gemstone characteristics and caring for your gemstones.

What Is Gemology And How Do You Become A Gemologist?

Gemology deals with the study of gemstones, and gemologists are the best source for customers to know whether the diamond they want to buy is authentic. But what exactly does a gemologist do? This article will explain.

Working with Pearls

Useful article about pearls and how to work with them in jewelry. Includes how to repair pearl jewellery.


Book of Kells pendantBook of Kells Pendant

In this tutorial you will learn to make a pendant with a decorative attached bail and how to add a gemstone cab using a premade bezel cup. From Deb Fitz.


Fire agate ringFire Agate Ring

Nice tutorial on how to make a bezel for an unusual shaped stone.